Uso de cenizas volantes y fosfoyesos en la síntesis de clínkeres belíticos de sulfoaluminatos

Autores/as

DOI:

https://doi.org/10.3989/mc.2019.11617

Palabras clave:

Clínker, Microestructura, Ceniza volante, Yesos, Sulfoaluminato de calcio

Resumen


En este estudio se han utilizado cenizas volantes y fosfoyeso como Naturally Occurring Radioactive Materials (NORM) para la síntesis de clínkeres belíticos de sulfoaluminatos. Se ha investigado la influencia de la composición de la materia prima y de las diferentes temperaturas de cocción. Los clínkeres y cementos se examinaron mediante difracción de rayos X y microscopía electrónica de barrido equipada con espectroscopía de energía dispersiva de rayos X. Los valores de compresión de los cementos se determinaron a la edad de 28 días. Las fases constituyentes de los clínkeres se identificaron como ye’elimita, fase-ß de la belita, ternesita y gehlenita, mientras que el principal producto de hidratación de la pasta de cemento se identificó como ettringita. Los resultados muestran que los cementos belíticos de sulfoaluminatos pueden ser fabricados con una resistencia a compresión de 45.9 N/mm2 mediante una cocción de la materia prima (70 % en peso de marga, 10 % de bauxita y 20 % de fosfoyeso) a una temperatura de 1320°C/1h

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Citas

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Publicado

2019-03-30

Cómo citar

Kramar, S., Žibret, L., Fidanchevska, E., Jovanov, V., Angjusheva, B., & Ducman, V. (2019). Uso de cenizas volantes y fosfoyesos en la síntesis de clínkeres belíticos de sulfoaluminatos. Materiales De Construcción, 69(333), e176. https://doi.org/10.3989/mc.2019.11617

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